场地类别模糊综合评定实用方法

Practical Methods of Fuzzy Synthetic Evaluation for Site Classification

本文基于新编抗震规范(GBJ11-89)场地分类的具体内容,提出考虑场地类别与评定指标间的模糊性实用评定方法。文中概述和讨论了新编规范场地分类原则及分类指标,建立相应的隶属函数,运用综合评判理论求解场地类别的模糊向量。由于建议方法在指标选取和某些具体限值方面都与新编规范相一致,因此可以看作是规范中场地类别划分方法的具体化。本文提出的方法较为简单,可以做为实际工程场地评定类别和中、小城市地震小区划的有效手段。

In this article, based on the specific contents of site category of new seismic design code of building (GBT11-39), the practical evaluation method in consideration of fuzzyness between site category and evaluating index has been provided,and the principle of site classification and category index of new code have been described and discussed. The corresponSdin subordinate function was established and the fuzzy vector of site was solved by applying the comprehensiveju dgement theory. Sinca the recommended method i alwsays compatible with new code in selecting any specific limit for index, it may be considered as a supplement of identification metheod for site category to the code. The provided method is easy to use. It may be taken as a effective means for site categore evaluation in practical engineering and seismic microzonation for middle or small cities.